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@INPROCEEDINGS{Lin:1046443,
      author       = {Lin, Yiyu},
      title        = {{D}ynamic {M}agnetic {S}tructural {P}roperties of
                      {F}e{O}𝑥 {N}anoparticles as {D}ispersion},
      reportid     = {FZJ-2025-03800},
      year         = {2025},
      abstract     = {Magnetic nanoparticles (MNPs) exhibit unique size-dependent
                      magnetic and structural behaviors that are strongly
                      influenced by their environment. In this work, we focus on
                      15 nm FeOx nanoparticles due to their chemical stability and
                      tunable magnetic properties. Using SQUID and PPMS
                      measurements, we investigated their magnetic dynamics
                      through hysteresis loops, ZFC/FC magnetization, AC
                      susceptibility, and relaxation experiments. These techniques
                      allowed us to determine the blocking temperature and to
                      distinguish between Néel and Brownian relaxation
                      mechanisms. Structural responses were studied by SAXS and
                      DLS under different solvents and external magnetic fields.
                      We observed that solvent viscosity plays a critical role in
                      relaxation behavior, with Brownian relaxation dominating at
                      high temperatures in low-viscosity solvents. Moreover,
                      field-dependent SAXS revealed anisotropic scattering
                      patterns, consistent with particle assembly. Model fitting
                      provided quantitative insights into particle size,
                      interaction strength, and field-induced aggregation.
                      Together, these results advance our understanding of how
                      solvent-mediated interactions and external fields couple the
                      magnetic and structural dynamics of FeOx nanoparticles, with
                      implications for biomedical and soft-matter applications.},
      organization  = {Master Thesis Defense,
                       Forschungszentrum Jülich, JCNS
                       (Germany)},
      subtyp        = {Invited},
      cin          = {JCNS-2 / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)31},
      url          = {https://juser.fz-juelich.de/record/1046443},
}